Method of making furnace covers, roofs, etc.



f April Z9 1924. 1,492,059

J. D. ADAMS METHOD OFIMAKING FURNACE covERs, RooFs, ETC

Filed May 8, 1922 FEGX! /INVEI R @MQW Patented Apr. 29, 1924.

UNITED ST I JAMES n. ADAMS, or BELLE VERNON, rnlvlvsvnvnnrs.

'METHOD OFMAKINGFRNACE COVERS, ROOFS, ETC.

Application filed Mayvr 8, 1922. Serial No. 559,490.

To @ZZ whom t may concern.'

Be it known that I, JAMEs D. ADAMS, a citizen of the United States, and resident of Belle Vernon, in the county of IVestmoreland` and State of Pennsylvania, have invented a new and useful Im rovement in Methods of Making Furnace lovers, Roofs, Etc.; and I doV hereby declare the following to be a full, clear, and exact description thereof.

My invention .relates to the manufacture of furnace covers, roofs, or doors.

In Letters Patent of the United States, No. 1,386,218 granted to me August 2, 1921, I have illustrated and described a furnace cover or door as well as the method of Inaking same, and in that patent the cover or door consisted of cast-metal with a brick lining, the metal forming the casting, filling the spaces between the bricks and surrounding the same. In the making of such a cover or door, the bricks were set in the mold with intervening spaces, and when the mo-ld was poured the metal flowed into the spaces between the bricks and the bricks formed an integral part of the entire casting composing the door or cover. In this method of making furnace covers or doors some diiiiculty arose from the fact that as the metal cooled and contracted the bricks were sub-- jected to a strong compressive force which tended some times to crush the bricks and loosen them so that they would drop from position, and so destroy the continuity of the brick-work or lining of the cover or door. p

The object of the present invention is to overcome this difficulty and to make allowance for the contraction of the metal so that while the bricks are all bound together, the metal in cooling contracts without this strain or crushing action on the bricks.

In the accompanying drawing, Fig. 1 is a plan view of a suitable furnace cover or roof partly broken away; Fig. 2 is a section on the line 2-2, Fig. 1; Fig. 3 is an enlarged section on the line 3 3, Fig. 1; Fig. f1 is an enlarged section showing the bricks arranged in the mold before pouring; and Fig. 5 is a like view after the pouring of the metal.

In the drawing the numeral 2 designates the metal-casting of the door or cover, said casting consisting of the sides 3i and ends 4.

Contained Within the sides and ends of the casting are the bricks 5 of a highly refracsages 6 formed therein at right angles to each other, and these passages are filled with the metal 7 which composee the casting 2,' so that the bricks are all interlocked and tied up with the casting and practically integral-therewith, thereby obtaining a very strong construction which holds the bricks securely in place.

In the manufacture of the above described door or cover the mold is made up inthe sand by the pattern required to make the size and shape of the door or cover desired, and the bricks are set in the inold, as shown in Fig. 4:, said bricks being separated by the spaces 8. To provide for this spacing the bricks are formed with the recesses 9 to receive the annular dried sand-cores 10, a sand-core fitting in each recess and each core having the conical portion 11 which engages the flaring seat 12 in the core-piece of the adjoining seat. In this manner the bricks are prevented from coming into direct contact with each other, thereby leaving the space 8 above referred to between each pair of bricks.

When the metal is poured into the mold the metal enters the passages 6 in the bricks and flowing from one passage to the other the metal is connected up with Athe main casting so that the metal is all integral and the bricks are united by a strong Vinterlocking bond.

As the metal in the mold cools the casting shrinks or contracts, and this shrinkage will act to crush the dry said-cores 10, permitting the bricks to move into contact with each other, as shown in Fig. 5. The crushed sand-cores will be contained within the recesses 9.

In Fig. 3 I have illustrated a roof composed of roof-sections made up in accordance with my invention, the space between the roof-sections being filled up by a specially shaped bricks 13, grouting 14 being filled in in the spaces between the roof Sections.

tory material, said bricks having the pas# By my invention I provide a furnace roof out bringing a crushing strain on the bricks,

V Y so that When the casting is cooled the bricksy are all iirmlyheld in place.

, bricks'With communicating openings formedV y therein in the mold, spacing said bricks temporarily apart by frangible Spacing members, pouring the metal in the mold,

permittingY itV to pass through ythe"communif eating openings insaid bricks, thereby per- 'Y mitting Vsaid bricks'tocapproach each oth-V er on the contractionof thernetal by the 'y crushing of saidY spacing members.

f 2. The Vmethod of manufacturing castwith communicating openings therein in the .20

mold, inserting rangibleV core-pieces be-V tween the bricks atY the openings, whereby said bricks are spaced apart, pouring the metal into the mold, directing it through the communicating openings in saidbricks, jandjdestroying said frangib1ecore-pieces by the contraction of the metal and. bringing' said bricks into contact Wit-h each other.

In testimony'whereof I, th'esail JAMES Y j D.` AnAMs,'haVe hereuntc set my hand; 1

I JAM'EseD, ADAMSQ. f 

